Reviews — Geological Survey and Museum. 379 



to us ill tliis report incliides some geographical remarks bearing 

 upon the climate, vegetation, population, hydrography, etc. On the 

 economic subject, particulars are given of the history of the district; 

 the coal-seams as they occur at Liguan, Chifladura, Bilbao, and 

 Batan ; the present methods of mining, cost, labour, etc. ; exploratory 

 work on military reservation ; and the classification and value of the 

 Batan coals. Then the author passes on to a description of the 

 general geology of the district, comprising observations on Batan 

 Island, Rapurapu Island, Caeraray, and San Miguel, and the adjacent 

 coast of Albay Luzon, which is followed by a more detailed 

 statement respecting the geology of Batan Island in connection with 

 its igneous base, the iron formation and its origin, the coal-measures, 

 the limestone series, and the Galicia sandstones and shales. Finally, 

 a chapter on the palteontology of Batan Island adds a further 

 interest to the work. Three or four sets of limestone have been 

 observed in the island rising to 1,330 feet above sea-level and 

 345 feet below the level of the sea : the lowest is bluish-grey and 

 contains coral fragments, the next is more regularly bedded but with 

 fewer fossils, whilst an uppermost limestone occurs above the coal- 

 measures at Bilbao on Mount Bilbao and has yielded some fossils. 

 From the highest to the lowest these limestones are said to be of 

 coralline character, containing forms almost identical with living 

 species. The bluish-grey material is full of Foraminiferal remains,, 

 particularly Opercidina complanata and a Bryozoan resembling 

 Cellepora formosensis of Newton & Holland (Journ. Sci. College 

 Imp. Univ. T5kyo, Japan, 1902, vol. xvii, article 6, pis. ii-iv, p. 6),^ 

 this latter having been originally described from the Miocene 

 formation (Orbitoidal limestone) of the Islands of Formosa and 

 Riu-Kiu, and tlie former reported by the same authors as occurring 

 in the Post-Pliocene deposits (raised coral-reef beds) of Riu-Kiu. 

 Molliiscan remains are found in the shales of the coal-measures, 

 including a species of TeJlina, and an Area like diluvii of Lamarck ^ 

 leaf-impressions are also met with. Further information respecting 

 these fossils is to be given in a later memoir when more fully studied, 

 but in the meantime tlie author recognises both Miocene and Pliocene 

 rocks in Batan Island, and with regai'd to the age of the coal deposits 

 he considers it possible that they may be of later age than Eocene. 

 Microphotographs of diorite from Rapurapu and serpentine from 

 Batan are given on plate xix ; and plate xs contains similarly 

 prepared figures of Opercidina complanata and Amphistegina (?). 



R. B. N. 



IV. — Short Notices. 

 1. — Geological Survey and Museum. 



WE have omitted to notice one of the most useful, interesting, 

 and important publications of this Department, issued 

 moreover last year. It is entitled "A Handbook to a Collection of 

 the Minerals of the British Islands, mostly selected from the Ludlam 

 Collection in the Museum of Practical Geology," and it is the 



